PSYCHE 
VOL. XL DECEMBER, 1933 
No. 4 
A NEW LESTODIPLOSIS 
By E. P. Felt, 
Stamford, Conn. 
A number of specimens were received from Mr. C. W. 
Collins, U. S. Bureau of Entomology laboratory, Melrose 
Highlands, Mass., and bearing the note number 9590c43, 
dated January 26, 1932, the record being by Mr. A. B. 
Proper. The following are the essentials of the original 
record. On July 11, 1931, an adult Dipteron issued from a 
pupa which had been formed in a vial in the Laboratory. 
The larva from which it came was reddish and of a sort 
commonly encountered while looking at spruce twigs. In 
this case, it was near or upon a dead larva of Epinotia 
nanana, which larva was saved and mounted upon the same 
slide as with the pupal case and the fly. It was not possible 
in many cases to tie up any host with this type of larva, 
which tends to throw doubt upon the authenticity of this 
apparent host relationship. The same type of Dipterous 
maggot has been encountered occasionally when making 
examinations for infestation of pine twigs by Rhyacionia 
buoliana. 
The above record, in connection with the fact that Les- 
todiplosis larvae are known to be predaceous and have been 
reared rather commonly from galleries inhabited by Cole- 
opterous borers, leads us to believe that this tentative asso- 
